<template>
    <el-main class="image-main" v-loading="loading">
        <div class="top p-3">
            <!-- <div v-for="(item, index) in list" :key="index">{{ item.url }}</div>
         -->
            <el-row :gutter="10">
                <el-col :span="6" :offset="0" v-for="(item, index) in list" :key="index">
                    <el-card shadow="hover" class="relative mb-3" 
                    :body-style="{ 'padding': 0 }" :class="{'border-blue-500' :item.checked}">
                        <el-image :src="item.url" fit="cover" class="h-[150px]" style="width: 100%"
                            :preview-src-list="[item.url]" :initial-index="0">
                        </el-image>
                        <div class="image-title">{{ item.name }}</div>
                        <div class="flex items-center justify-center p-2">
                            <el-checkbox v-if="openChoose" v-model="item.checked"  @change="handleChooseChange(item)"/>
                            
                            <el-button type="primary" size="small" text @click="handleEdit(item)">重命名</el-button>

                            <el-popconfirm title="是否要删除该图片?" confirm-button-text="确认" cancel-button-text="取消"
                                @confirm="handleDelete(item.id)">
                                <template #reference>
                                    <el-button class="!m-0" type="primary" size="small" text>删除</el-button>
                                </template>
                            </el-popconfirm>
                        </div>
                    </el-card>
                </el-col>
            </el-row>

        </div>
        <div class="bottom">
            <el-pagination background layout="prev, pager, next" :total="total" :current-page="currentPage"
                :page-size="limit" @current-change="getData" />
        </div>
    </el-main>
    <el-drawer 
    v-model="drawer" 
    title="上传图片">
    <UploadFile :data="{ image_class_id }" @success="handleUploadSuccess" />
    </el-drawer>
</template>

<script setup>
import { ref, computed } from 'vue'
import {
    getImageList,
    updateImage,
    deleteImage

} from "@/api/image.js"

import {
    showPrompt,
    toast
} from "@/composables/util.js"


import UploadFile from "./UploadFile.vue"


// 上传图片
const drawer = ref(false)
const openUpdateFile = () =>drawer.value = true



// 分页
const currentPage = ref(1)
const total = ref(0)
const limit = ref(10)
const list = ref([])
const loading = ref(false)
const image_class_id = ref(0)



// 获取数据
function getData(p = null) {
    if (typeof p == "number") {
        currentPage.value = p

    }
    loading.value = true
    getImageList(image_class_id.value, currentPage.value)
        .then(res => {
            total.value = res.totalCount
            list.value = res.list.map(o=>{
                o.checked = false
                return o
            })
        })
        .finally(() => {
            loading.value = false
        })
}

// 根据分类ID重新加载图片
const loadData = (id) => {
    currentPage.value = 1
    image_class_id.value = id
    getData()

}

// 重命名的方法
const handleEdit = (item) => {
    showPrompt("重命名", item.name)
        .then(({ value }) => {
            loading.value = true
            updateImage(item.id, value)
                .then(res => {
                    toast("修改成功!")
                    getData()

                })
                .finally(() => {
                    loading.value = false

                })

        }).catch(() => {
        })
}

// 删除图片的方法
const handleDelete = (id) => {
    loading.value = true
    deleteImage([id])
        .then(res => {
            toast("删除成功!")
            getData()

        })
        .finally(() => {
            loading.value = false
        })

}

// 上传成功
const handleUploadSuccess = ()=>getData(1)


const props = defineProps({
    openChoose:{
        type:Boolean,
        default:false
    },
    limit:{
        type:Number,
        default:1
    }
})


// 选中图片
const emit = defineEmits(["choose"])
const checkedImage = computed(()=>list.value.filter(o=>o.checked))

const handleChooseChange = (item) =>{
    if(item.checked && checkedImage.value.length > props.limit){
        item.checked = false
        return toast(`最多只能选中${props.limit}张`, 'error')

    }
    emit("choose",checkedImage.value)

}



defineExpose({
    loadData,
    openUpdateFile

})


</script>

<style scoped>
.image-main {
    position: relative;
}


.image-main .top {
    position: absolute;
    top: 0;
    right: 0;
    left: 0;
    bottom: 50px;
    overflow-y: auto;
}

.image-main .bottom {
    position: absolute;
    bottom: 0;
    height: 50px;
    left: 0;
    right: 0;
    @apply flex items-center justify-center;

}

.image-title {
    position: absolute;
    top: 122px;
    left: -1px;
    right: -1px;
    @apply text-sm truncate text-gray-100 bg-opacity-50 bg-gray-800 px-2 py-1;

}
</style>